Electrometer



FIG. 1 is a front view showing my new design for an electrometer;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is a perspective view of the electrometer in which the supporting leg is unfolded. 

The ornamental design for an electrometer, as shown and described. 